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  • Title: A study of diabetes-induced erectile dysfunction treated with human umbilical cord mesenchymal stem cells.
    Author: Wang S, Zhang A, Liu K, Pan Y, Kang J, Niu S, Song Y, Zhang Z, Li Y, Liu L, Liu X.
    Journal: Andrologia; 2022 Aug; 54(7):e14440. PubMed ID: 35415927.
    Abstract:
    The present study aimed to assess the value of human umbilical cord mesenchymal stem cells (hUC-MSCs) for the treatment of diabetes-induced erectile dysfunction (DMED). We established a type 1 diabetes model through intra-abdominal streptozotocin injection. After 10 weeks, an apomorphine test was performed to screen the rats for erectile dysfunction (ED). The rats were divided into three groups: normal control group (n = 10), DMED group (n = 9) and DMED+hUC-MSC group (n = 9). After 4 weeks of hUC-MSC therapy, erectile function was evaluated by intracavernous pressure measurements, and penile tissue collagen and smooth muscle were examined by haematoxylin-eosin and Masson's trichrome staining. In addition, western blotting, immunohistochemistry and RT-PCR analysis of TLR4, VEGF and eNOS were performed. The results showed that hUC-MSC treatment restored erectile function (p < .05) and reversed the smooth muscle/collagen ratio changes of DMED rats (p < .05). Furthermore, hUC-MSC treatment inhibited the expression of TLR4 (p < .05) and enhanced VEGF and eNOS expression (p < .05). In conclusion, hUC-MSC treatment restored the erectile function of diabetic rats by inhibiting TLR4, improving corpora cavernosa fibrosis, and increasing VEGF and eNOS expression.
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